fix(@embark/ens): fix broken test due to async API

As part of 8ed5376533 we made `ENS.getEnsConfig()`
asynchronous, hence it needs a callback. This change was not done in one of the
ENS tests, resulting in the test to fail. The test mocked that particular API,
turning it into noop, which is why the test kept timing out.

This commit fixes the test by not mocking the API and adding the needed configuration
to the environment.

packages/plugins/ens/package.json

@@ -34,7 +34,7 @@
     "ci": "npm run qa",
     "clean": "npm run reset",
     "lint": "eslint src/",
-    "qa": "npm-run-all lint _build",
+    "qa": "npm-run-all lint _build test",
     "reset": "npx rimraf dist embark-*.tgz package",
     "solo": "embark-solo",
     "test": "jest"

packages/plugins/ens/test/index.js

@@ -19,7 +19,8 @@ describe('embark-ens', () => {
       namesystemConfig: {
         register: {
           rootDomain: 'root.eth'
-        }
+        },
+        dappConnection: []
       }
     };
   });
@@ -29,17 +30,18 @@ describe('embark-ens', () => {
   });
 
   it("should register the right artifact", (done) => {
-    const pipelineRegisterHandler = jest.fn((args, cb) => {
-      expect(args).toEqual({
-        path: ['test-dir', 'config'],
-        file: 'namesystem.json',
-        format: 'json',
-        content: Object.assign({}, embark.config.namesystemConfig, ens.getEnsConfig())
+    const pipelineRegisterHandler = jest.fn(async (args, cb) => {
+      ens.getEnsConfig((err, config) => {
+        expect(args).toEqual({
+          path: ['test-dir', 'config'],
+          file: 'namesystem.json',
+          format: 'json',
+          content: Object.assign({}, embark.config.namesystemConfig, config)
+        });
+        cb();
+        done();
       });
-      cb();
-      done();
     });
-    ens.getEnsConfig = jest.fn();
 
     embark.events.setCommandHandler('pipeline:register', pipelineRegisterHandler);